created a generic "units" module, which should be helpful in keeping certain units Correct.

src/core/units.rs

@@ -0,0 +1,14 @@
+pub enum Current {
+    MilliAmps(u32),
+    MicroAmps(u32),
+}
+
+pub enum Voltage {
+    MilliVolts(u32),
+    MicroVolts(u32),
+}
+
+pub enum Angle {
+    Degrees(f32),
+    Radians(f32),
+}